CN213294793U

CN213294793U - Two-stage DTRO system capable of being maintained on line

Info

Publication number: CN213294793U
Application number: CN202021464635.4U
Authority: CN
Inventors: 郭战胜; 薛德亚
Original assignee: Beijing Qinrunze Environmental Technology Co ltd
Current assignee: Beijing Qinrunze Environmental Technology Co ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-05-28
Anticipated expiration: 2030-07-14

Abstract

The utility model provides a two-stage DTRO system that can maintain on line, respectively add a high pressure valve at the raw water import pipe of single DTRO membrane post and concentrate outlet pipe, maintain the maintenance to single membrane post in service when needs, when dismantling even, only need close the valve of this membrane post raw water inlet tube and concentrate outlet pipe, can realize maintaining the on-line of this membrane post, and do not influence the normal operating of other membrane post systems.

Description

Two-stage DTRO system capable of being maintained on line

Technical Field

The utility model belongs to landfill leachate handles the field.

Background

In the technology for treating the landfill leachate of the sanitary domestic garbage landfill, a two-stage DTRO (disc tube reverse osmosis) process belongs to one of landfill treatment mainstream processes approved by national technical Specification for treating the landfill leachate (CJJ150-2010), technical Specification for treating the landfill leachate (HJ564-2010) and technical guide for treating the landfill leachate (RISN-TG 023-2016). In the traditional design, a single membrane column cannot be independently repaired or disassembled when a system runs, and if one membrane column is in a problem or needs to be independently repaired and maintained, two-stage DTRO equipment is required to be shut down; in addition, the raw water inlet pipeline and the concentrated solution pipeline of the single DTRO membrane column of the two-stage DTRO system belong to a high-pressure pipeline, and in the traditional design, when the equipment runs, if the single DTRO membrane column is detached or maintained, the high-pressure pipeline has the phenomenon of discharging high-pressure water, and the discharged high-pressure water can relate to the personal safety problem of operators, so that the time is wasted, the equipment efficiency is influenced, and safety accidents can also occur.

Disclosure of Invention

This scheme is in original process flow, respectively add a high pressure valve on single membrane column raw water inlet pipe and concentrate outlet pipe, go wrong when certain DTRO membrane column in the operation, when needing maintenance or dismantlement, then need not whole equipment and shut down, only need close the DTRO membrane column raw water inlet pipe high pressure valve and the concentrate outlet pipe high pressure valve of going wrong in proper order, can carry out online maintenance or dismantlement to this problem membrane column, the maintenance of having so both realized single problem membrane column is maintained or is dismantled, do not influence the operation of other system membrane columns again, and can improve equipment's work efficiency.

Drawings

FIG. 1 is a schematic diagram of the water inlet process of a section of a membrane column of DTRO in the prior art

FIG. 2 is a schematic view of the water inlet process of a section of the DTRO membrane column of the present invention

In the figure: 1, high-pressure pump, 2, high-pressure pump accumulator, 3, spring relief valve, 4, online circulating pump, 5, DTRO membrane column, 6, check valve, 7, high-pressure valve.

Detailed Description

The present invention will be described with reference to the accompanying drawings.

As shown in fig. 2, raw landfill leachate enters membrane columns through a high-pressure pump (1), and a high-pressure valve (7) is added on a raw water inlet pipeline and a concentrated solution outlet pipeline of each membrane column. If the second membrane column is out of order or needs to be disassembled, the high-pressure valve of the water inlet pipe and the high-pressure valve of the concentrated solution outlet pipe are closed in sequence, so that the second membrane column is guaranteed not to be filled with water or discharged with water, and the operation personnel can disassemble the second membrane column on line. The check valve (6) is arranged on the pipeline at the water production end of the single membrane column in the traditional design, water cannot flow out, even if the water flows out, the water is low-pressure water, and no danger exists.

When the high-pressure valves arranged on the raw water inlet pipeline and the concentrated solution outlet pipeline of a single membrane column in the system are not closed, the membrane column can normally operate on line. When the high-pressure valves arranged on the raw water inlet pipeline and the concentrated solution outlet pipeline of a single membrane column in the system are closed, the membrane column is in a non-operating state, and the membrane column can be maintained or disassembled. Therefore, the working efficiency of the equipment is ensured, and the occurrence of safety accidents is avoided.

Claims

1. A two-stage DTRO system capable of being maintained on line comprises a high-pressure pump and a plurality of DTRO membrane columns arranged in parallel, and is characterized in that: the water production end pipeline of each DTRO membrane column is provided with a check valve, a raw water inlet pipe high-pressure valve is arranged at the raw water inlet pipeline of a single DTRO membrane column, and a concentrated solution outlet pipe high-pressure valve is arranged at the concentrated solution outlet pipeline of the single DTRO membrane column.

2. The online maintainable two-stage DTRO system of claim 1, wherein: the pipelines at the water producing end of the single membrane column are provided with check valves.